Protecting device



April 22 1924. 1,491,485

E. MCKENZIE PROTECTING DEVICE Filed Feb. 4. 1922 v I I upil l l ii wruyI V A llllIJJllliiillllhmllli- Patented Apr. 22, 1924.

ETED STATES ELLIOT MCKENZIE, or ountain inon', MINNESOTA.

PROTECTING- DEVICE.

Application filed February 4, 1922. Serial No. 534,195.

To all whom it may concern.

Be it known that I, ELLIOT MCKENZIE, a citizen of the United States,residing at Mountain Iron, in the county of St. Louis and State ofMinnesota, have invented certain new and useful Improvements inProtecting Devices, of which the following is a specification, referencebeing had therein to the accompanying drawings.

This invention relates to a protecting device for valve stems of anautomobile pneumatic tire, and the object of the invention is theprovision of simple and eflicient means, whereby the outer end of thestem and its cap will be protected, and at the same time such protectingmeans may be quickly and easily removed by the operator.

YVith this and other objects in view, my invention comprises certainnovel combinations, constructions and arrangements of.

parts as will be hereinafter described, illustrated in the accompanyingdrawings, and more particularly pointed out in the appended claim.

In the drawings:

Figure 1 is a view in side elevation of my protecting device shownapplied to an automobile wheel.

Figure 2 is a vertical, sectional view of the device. 1

Figure 3 is a perspective view of the base or inner casing, while Figure4 is a top plan view of the base, and

Figure 4 is a vertical, sectional view of the same.

Figure 5 is a view in elevation of the cap or outer casing.

Figure 6 is a sectional view, taken on line 6-6, Fig. 5, and looking inthe direction of the arrows.

Figure 7 is a View of the spring-carried cap.

Referring to the drawings by numerals, 1 designates the valve stem uponwhich is threaded the base or inner casing 2.

The base or inner casing 2 comprises, preferably, a square base-portion3 which affords a ready grip for the operator to screw the inner casing2 upon the stem 1. Integral with the base-portion 8 is acylindrical-like body 4 which is provided with a pair of notches 5 andopen at their ends upon notches 5 are a pair of grooves 6. In the centerof each groove 6 is formed a pocket 7,

into which pockets the lugs 8 extend. These lugs 8 are formed upon thereduced cylindrical extension 9 .of the cylindrical body 10 of the capor outer casing 11. Depending from the top 12 of the outer casing 11 isan apertured lug 13, through which one end of the coil spring 14extends; the extending of an end of the spring 14 through lug 13suspends the spring from the top 12; the lower end of the spring 14 isprovided with a spring-carried cap 14*; this cap 14 is provided with anupwardly bulged body 14", in which body is an aperture 14, through whichthe upper end of cap 15 extends, Fig. 2. Oppositely extending ears 15are formed upon the cap 14 and these ears are looped around a coil ofthe spring 14, for fastening cap 14 upon the lower end of said spring.The cap 14 fits down upon cap 15 allowing the spring to press upon thecap and valve stem.

The placing of theprotecting device upon stem 1 can be quicklyaccomplished for all the operator hasto do is to screw the inner casing2 upon the stem 1 until it tightly engages the felly 16, then place theouter casing over the outer end of the valve stem 1, causing the lugs 8to pass down into the notches 5, thence by imparting a rotary movementto the outer casing, the lugs 8 will travel around in the grooves 6 andride up into pockets 7 through the natural action of the spring 14pressing outwardly upon the outer casing; the action of spring 14 willprevent the outer casing 11 from being accidentally displaced off theinner casing, but. by reason of the quick adjustment of the outercasing, upon the inner casing, the operator can quickly and easilyremove the outer casing when it is desired to have access to the valvestem 1 and cap 15.

VVh'ile I have described the preferred embodiment of my invention, andhave illustrated the same in the accompanying drawings, certain minorchanges or alterations may appear to one skilled in the art to which.this invention relates, during the extensive manufacture of the same andI, therefore, reserve the right to make such alterations or changes asshall fairly fall within the scope of the appended claim.

What I claim is: y

In a device of the class described, a mounting member adapted to besecured about a valve stem, a casing detachably mounted upon themounting member, a closure for the extending from the upper end of thedust 1o outer end of said casing, a coiled spring in cap, and earsextending from said body and said casing, an eye carried by the closureextending inwardly and radially thereof for Within said casing andreceiving the upper engaging the lower convolutions of said convolutionof said spring to suspend the spring and suspending the body from thespring in the casing, and a cap for engaging spring. 15 the dust cap ofa valve stem enclosed by said In testimony whereof I hereunto aifix mycasing, said cap comprising a body provided signature. 7

with an aperture for receiving a projection ELLIOT MCKENZIE.

